48 pages (PDF version). Col. ill. Maps. Includes appendices. The publication discusses the "legal and factual basis for EPA’s decision regarding four exceedances of the 24-hour PM10 NAAQS in 2008 at the West 43rd monitoring site on March 14, April...

Water-storage--Environmental aspects--Colorado River (Colo.-Mexico); Water resources development--Colorado River (Colo.-Mexico); Reservoirs--Environmental aspects--Colorado River (Colo.-Mexico); Water transfer--Colorado River (Colo.-Mexico)

107 pages (PDF version). File size: 4932.24 KB. The report considers adoption of a guideline to aid the Secretary of Interior in determining how much water should be reserved as storage in the Upper Colorado River basin. This would affect water...

Water-storage--Environmental aspects--Colorado River (Colo.-Mexico); Water resources development--Colorado River (Colo.-Mexico); Reservoirs--Environmental aspects--Colorado River (Colo.-Mexico); Water transfer--Colorado River (Colo.-Mexico)

107 pages (PDF version). File size: 4932.24 KB. The report considers adoption of a guideline to aid the Secretary of Interior in determining how much water should be reserved as storage in the Upper Colorado River basin. This would affect water...

153 pages (PDF version). Col. ill. Maps. Appendices. The report discusses the events and issues that led to a significant power outage in Arizona and parts of California. stemming in part from the loss of a single transmission line.